...This will be an incredible racing engine when completed. A "one-of-a-kind" crankcase as I seriously doubt anyone will ever spend over 150 hours implementing all of the necessary modifications to convert an early 2.0 liter Aluminum crankcase from normally aspirated to MFI with this level of cosmetic accuracy and attention to detail. These photos will document the progress and modifications needed to allow the use of the 1973 Porsche 911 RSR 2.8 Liter Marelli Twin-Plug Distributor on the more durable and very desirable early 2.0 liter Aluminum Sand-Cast crankcase http://www.pbase.com/9146gt/image/28169288

This is how the typical and less costly MFI modification implementation looks like on the early 2.0 liter Aluminum crankcase http://www.pbase.com/9146gt/image/96707555

The early 2.0 liter Aluminum Sand-Cast crankcases were designed to use a 27mm shaft http://www.pbase.com/slidevalve911rsr/image/53524561 distributor such as the "early" Marelli Twin-Plug Distributors http://www.pbase.com/9146gt/image/32536440 and we will be changing this early crankcase to accept the larger diameter 30mm shaft of a late type 2.8 RSR Marelli distributor http://www.pbase.com/slidevalve911rsr/image/53524563 to achieve the correct RSR look.

Other and more complicated steps will also have to be implemented to make this all fit correctly. To give you a better idea of what we are about to do, take a look at this photo of my factory 3.0 liter 911 RSR Sand-Cast Aluminum Crankcase showing the area where the "later" Marelli TP Distributor fits http://www.pbase.com/slidevalve911rsr/image/52779034 - Here is a "side-by-side" comparison of the 911 RSR crankcase (left) and the "modified" early 2.0 liter Sand-Cast Aluminum Crankcase (right) http://www.pbase.com/9146gt/image/96705997

This photo shows the area where the "sculpturing" of the newly added Aluminum piece took place http://www.pbase.com/9146gt/image/96712719

This is how our Aluminum support-block modification for the late Marelli distributor looks like before being welded http://www.pbase.com/9146gt/image/96712679

The 911 RSR is a MFI (mechanical fuel injected) engine which carried a rather large and heavy BOSCH Fuel Injection Pump http://www.pbase.com/slidevalve911rsr/image/56562291 - This heavy pump gets bolted at the top-left corner of the left-half of the 911 crankcase http://www.pbase.com/slidevalve911rsr/image/63926642